11988936037 has 16 divisors (see below), whose sum is σ = 13050520560. Its totient is φ = 10947456000.

The previous prime is 11988936019. The next prime is 11988936059. The reversal of 11988936037 is 73063988911.

It is a Cunningham number, because it is equal to 109494²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 11988936036 = 1^2 + 109494^2 .

It is not a de Polignac number, because 11988936037 - 2³¹ = 9841452389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11988936007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1783639 + ... + 1790347.

It is an arithmetic number, because the mean of its divisors is an integer number (815657535).

Almost surely, 2^11988936037 is an apocalyptic number.

It is an amenable number.

11988936037 is a deficient number, since it is larger than the sum of its proper divisors (1061584523).

11988936037 is a wasteful number, since it uses less digits than its factorization.

11988936037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8184.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 11988936037 in words is "eleven billion, nine hundred eighty-eight million, nine hundred thirty-six thousand, thirty-seven".